A comparison of channel estimation techniques in OFDM with a proposed improvement in FFT based estimator

Authors:
Malik Muhammad Usman Gul;Muhammad Azam;Syed Ismail Shah;Jamil Ahmad
Affiliations:
IQRA University, Islamabad, Pakistan;IQRA University, Islamabad, Pakistan;IQRA University, Islamabad, Pakistan;IQRA University, Islamabad, Pakistan
Venue:
Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly
Year:
2009

Citing 2
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A comparison of pilot-aided channel estimation methods for OFDMsystems

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CHANNEL ESTIMATION FOR WIRELESS OFDM SYSTEMS

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Abstract

In this paper, we compare the performance of several channel estimation techniques in training and pilot based OFDM systems. Both sample and non sample spaced channels have been considered along with null sub-carriers. We also present a modified interpolation based FFT estimator for training based channel estimation in presence of null sub-carriers for sample spaced channels. Improvement in performance compared to conventional FFT based estimator is shown through simulation results.